Summary of the invention
Based on this, be necessary to provide a kind of high to the amount of liquid control accuracy in drain rope, atomizer, atomizing component and inhalator simultaneously easy to assembly, with low cost.
An atomizer for inhalator, comprises housing, pad, reserve liquid layer, drain rope and nebulising element;
Described housing comprises the first housing and the second housing, and described first housing is arranged in described second housing at least partly, and described first enclosure interior offers gas channel, forms the liquid storage cylinder being used for storage of liquids between described first housing and described second housing;
Described pad and described reserve liquid layer are all set on described first housing, and described pad is between described liquid storage cylinder and described reserve liquid layer, and the side of described reserve liquid layer abuts with described pad; Described pad offers the delivery hole being communicated with described liquid storage cylinder and described reserve liquid layer, described reserve liquid layer is for the liquid drawn in described liquid storage cylinder and store;
The opposite side of described reserve liquid layer abuts with described drain rope, and described drain rope is for drawing the liquid in described reserve liquid layer;
Described nebulising element is fixedly connected with described drain rope, and described nebulising element is used for the atomization of liquid in described drain rope.
Wherein in an embodiment, described delivery hole is multiple, and delivery hole described at least one is non-circular hole.
Wherein in an embodiment, described housing also comprises the 3rd housing, described 3rd housing is that described 3rd enclosure interior forms container cavity, and described pad and described reserve liquid layer are positioned at described container cavity by the edge of described second housing described second housing extension shape dorsad;
Described reserve liquid layer abuts with the inwall of described 3rd housing, and described reserve liquid layer is by the space sealing between described 3rd housing and described first housing.
Wherein in an embodiment, also comprise atomization seat, described atomization seat inside offers atomization chamber, and one end of described atomization seat is opening-like, and the other end of described atomization seat offers the through hole being communicated with described atomization chamber and described atomization seat outside;
Described drain rope is positioned at described atomization chamber, and the edge of one end that described atomization seat is opening-like abuts with described reserve liquid layer.
Wherein in an embodiment, described nebulising element comprises wire; Described atomization seat is elastomeric material, and described atomization seat is also provided with cable-through hole, and described cable-through hole is that described wire is formed through blind hole.
Wherein in an embodiment, described drain rope comprises many filaments, and described many filaments being positioned at the end of described drain rope are dispersed;
The described filametntary end of part abuts with described reserve liquid layer, and filametntary end described in another part is clamped between described atomization seat and described reserve liquid layer.
Wherein in an embodiment, based on described many filametntary dispersions place, the described filametntary length that end abuts with described reserve liquid layer is less than end and is clamped in described filametntary length between described atomization seat and described reserve liquid layer.
Wherein in an embodiment, the quantity of the end of described drain rope is two, and the two ends of described drain rope are positioned at the relative both sides of described first housing;
Described nebulising element comprises heating wire, and described heating wire is wrapped in the middle part of described drain rope;
Described first housing offers the opening being communicated with described gas channel and described atomization chamber, the position of described through hole is corresponding with described opening, described heating wire is between described through hole and described opening, and the distance between described heating wire and described first housing is greater than 2mm.
Wherein in an embodiment, also comprise anode connector, described anode connector comprises anode connector body and boss; Described boss is arranged at the outside of described anode connector body, and described boss protrudes from described anode connector body; Described anode connector body and described boss are conductor, described anode connector body and the electrical connection of described boss;
Described atomization seat is positioned at the container cavity of described 3rd housing; Part described anode connector body stretches in described container cavity, and abuts with described atomization seat, and described anode connector body is connected with the negative electricity of described nebulising element; Described anode connector body offers air inlet, and described air inlet is communicated with the outside of described gas channel and described anode connector body.
An atomizing component for inhalator, comprises suction nozzle and sleeve pipe, and the atomizer of described inhalator;
Described suction nozzle is positioned at one end of described sleeve pipe, and described atomizer is positioned at the inside of described sleeve pipe.
A kind of inhalator, comprises power supply module and described atomizing component;
Described power supply module is fixedly connected with described atomizing component, and described power supply module is electrically connected with described nebulising element.
Above-mentioned atomizer, atomizing component and inhalator, the liquid in liquid storage cylinder is contacted with reserve liquid layer by the delivery hole on pad, thus is absorbed by reserve liquid layer, and the liquid in reserve liquid layer drawn by drain rope, and nebulising element is again by the atomization of liquid in drain rope.The liquid percent of pass of pad is high, and the liquid percent of pass of pad can carry out rough control by the setting in the number of delivery hole and aperture.The percent of pass of reserve liquid layer is low, and reserve liquid layer can control the throughput of liquid further accurately.Pad and reserve liquid layer acting in conjunction, effectively raise the control accuracy to the amount of liquid in drain rope.Pad and reserve liquid layer are all set on the first housing, the assembling of pad and reserve liquid layer all with the first housing for benchmark, easy to assembly.Pad is laminated structure, with low cost, reduces production cost.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, atomizer, atomizing component and inhalator are described more fully.The first-selected embodiment of atomizer, atomizing component and inhalator is given in accompanying drawing.But atomizer, atomizing component and inhalator can realize in many different forms, are not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the disclosure of atomizer, atomizing component and inhalator more comprehensively thorough.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of the term used in the description of atomizer, atomizing component and inhalator herein just in order to describe specific embodiment, is not intended to be restriction the present invention.
Atomizer in the present embodiment is the part of inhalator, and for by the atomization of liquid, and by the fog input human body after atomization, this inhalator can as electronic cigarette, also can as medical nebulizer or other.
As shown in Figure 1 to Figure 3, the atomizer 100 of an embodiment, comprises housing 110, pad 120, reserve liquid layer 130, drain rope 140 and nebulising element (not shown).Housing 110 comprises the first housing 112 and the second housing 114, first housing 112 is arranged in the second housing 114 at least partly, first housing 112 and the preferred integrated structure of the second housing 114, first housing 112 inside offers gas channel 113, forms the liquid storage cylinder 115 being used for storage of liquids between the first housing 112 and the second housing 114.If inhalator is electronic cigarette, then the liquid in liquid storage cylinder 115 can be tobacco juice, if inhalator is medical nebulizer, then the liquid in liquid storage cylinder 115 can be liquid drug.
Pad 120 and reserve liquid layer 130 are all set on the first housing 112, and pad 120 is between liquid storage cylinder 115 and reserve liquid layer 130, and the side of reserve liquid layer 130 abuts with pad 120.Pad 120 offers the delivery hole 122 being communicated with liquid storage cylinder 115 and reserve liquid layer 130, reserve liquid layer 130 is for the liquid drawn in liquid storage cylinder 115 and store.The opposite side of reserve liquid layer 130 abuts with drain rope 140, and drain rope 140 is for drawing the liquid in reserve liquid layer 130.Nebulising element is fixedly connected with drain rope 140, and nebulising element is used for the atomization of liquid in drain rope 140.
Liquid in liquid storage cylinder 115 is contacted with reserve liquid layer 130 by the delivery hole 122 on pad 120, thus is absorbed by reserve liquid layer 130, and the liquid in reserve liquid layer 130 drawn by drain rope 140, and nebulising element is again by the atomization of liquid in drain rope 140.The liquid percent of pass of pad 120 is high, and the liquid percent of pass of pad 120 can carry out rough control by the setting in the number of delivery hole 122 and aperture.The percent of pass of reserve liquid layer 130 is low, and reserve liquid layer 130 can control the throughput of liquid further accurately.Pad 120 and reserve liquid layer 130 acting in conjunction, effectively raise the control accuracy to the amount of liquid in drain rope 140.
Pad 120 and reserve liquid layer 130 are all set on the first housing 112, the assembling of pad 120 and reserve liquid layer 130 all with the first housing 112 for benchmark, easy to assembly.Pad 120 is hard material preferably, convenient assembling.Pad 120 is laminated structure, and in one embodiment, pad 120 can be porose plastic sheet, with low cost, reduces production cost.Delivery hole 122 can be one, also can be multiple, and simultaneously see Fig. 4, in the fig. 4 embodiment, delivery hole 122 is multiple, and multiple delivery hole 122 is uniformly distributed.Delivery hole 122 is as far as possible without circular port, if the viscosity of the liquid in liquid storage cylinder 115 is large, surface tension is large, circular port surface easily forms stable film, liquid is caused to be difficult to spill, therefore, in preferably embodiment, at least one delivery hole 122 is non-circular hole, non-circular hole is not easy to produce film, can ensure that liquid passes through smoothly.
Wherein in an embodiment, housing 110 can also comprise the 3rd housing 116,3rd housing 116 in the edge by the second housing 114 dorsad the second housing 114 extend shape, the 3rd housing 116 inside forms container cavity 117, and pad 120 and reserve liquid layer 130 are positioned at container cavity 117.Certainly, in other embodiments, pad 120 can directly be connected on the second housing 114, the second housing 114, pad 120 is fixedly connected with reserve liquid layer 130 by other syndetons.
In the present embodiment, the first housing 112, second housing 114 and the 3rd housing 116 structure that preferably three in one is shaping.First housing 112, second housing 114 and the 3rd housing 116 all can be in a tubular form.The internal diameter of the 3rd housing 116 is greater than the internal diameter of the second housing 114, and the shape portion, formation rank, junction 118 of the 3rd housing 116 and the second housing 114, pad 120 is connected in shape portion, rank 118.The connected mode of the present embodiment makes fast easy to assembly, and stable connection is reliable.
In one embodiment, reserve liquid layer 130 abuts with the inwall of the 3rd housing 116, and reserve liquid layer 130 is by the space sealing between the 3rd housing 116 and the first housing 112.Reserve liquid layer 130 can stop liquid to flow out from liquid storage cylinder 115, serves the effect of sealing, ensure that the sealing between liquid storage cylinder 115 and gas channel 113.
Simultaneously see Fig. 5, Fig. 6, atomizer 100 also comprises atomization seat 160, and atomization seat 160 inside offers atomization chamber 161, and one end of atomization seat 160 is opening-like, and the other end of atomization seat 160 offers the through hole 163 being communicated with atomization chamber 161 and atomization seat 160 outside.What drain rope 140 was at least part of is positioned at atomization chamber 161, and the edge of one end that atomization seat 160 is opening-like abuts with reserve liquid layer 130.Atomization seat 160 is the space that atomization provides a sealing, and air enters atomization chamber 161 from through hole 163, and the liquid after band atomization enters gas channel 113, thus by user's suction inlet.
Nebulising element comprises wire (not shown), and nebulising element is arranged in atomization chamber 161, and wire needs through atomization seat 160.In one embodiment, atomization seat 160 is elastomeric material, such as silica gel, atomization seat 160 is also provided with cable-through hole, see Fig. 5, Fig. 6, cable-through hole is that wire passes blind hole 165 formation, and wire is through atomization seat 160, atomization seat 160 utilizes the elasticity of self by wire environmental seal, avoids liquid to flow out atomization chamber 161 along wire.
Further, atomization seat 160 comprises sidewall 162 and bottom surface 164, and sidewall 162 is in shorter tubulose, and bottom surface 164 is connected to one end of sidewall 162, and blind hole and through hole 163 all can be arranged on bottom surface 164.See Fig. 5, in one embodiment, sidewall 162 offers the groove 1621 of adaptive drain rope 140, drain rope 140 can be located accurately, be less likely to occur mobile.In one embodiment, bottom surface 164 offers the groove 1641 holding drain rope 140 dripping, make drain rope 140 dripping be not easy to be deposited near wire, further avoid liquid to flow out atomization chamber 161 along wire.
Simultaneously see Fig. 3, wherein in an embodiment, drain rope 140 comprises many filaments 142, is positioned at many filaments 142 of the end of drain rope 140 in dispersed.By being broken up on the top of drain rope 140, above-mentioned dispersed can be formed.Dispergated filament 142 increases the contact area with reserve liquid layer 130, thus improves the drain speed between filament 142 and reserve liquid layer 130.
The quantity of the end of drain rope 140 is generally two, and the two ends of drain rope 140 are positioned at the relative both sides of the first housing 112.Further, in one embodiment, the end of few fibers silk 142 abuts with reserve liquid layer 130, the end of another part filament 142 is clamped between atomization seat 160 and reserve liquid layer 130, thus guarantee the steadiness of drain rope 140 position, avoid drain rope 140 because the reasons such as gravity and reserve liquid layer 130 depart from.Further, based on dispersion place of many filaments 142, the length of the filament 142 that end abuts with reserve liquid layer 130 can be less than the length that end is clamped in the filament 142 be atomized between seat 160 and reserve liquid layer 130.Longer by the filament 142 clamped, can ensure that the atomization seat 160 of filament 142 and its both sides and reserve liquid layer 130 have enough contacts area, improve the reliability of clamping.The filament 142 abutting reserve liquid layer 130 is shorter, filament 142 can be avoided to pile up in the position of contact reserve liquid layer 130, and cause mutually extruding between filament 142, the conduction of block liquid, the top of filament 142 can be made can to contact with reserve liquid layer 130 simultaneously, ensure the drain speed of filament 142 further.
It should be noted that, Fig. 3 is only the schematic diagram of filament 142 dispersity, and the quantity of filament 142, generally more than the quantity shown in Fig. 3, can be wound around between filament 142 mutually.
Simultaneously see Fig. 7, nebulising element can comprise heating wire 152, and heating wire 152 is wrapped in the middle part of drain rope 140.Simultaneously see Fig. 3, first housing 112 offers the opening being communicated with gas channel 113 and atomization chamber 161, the position of through hole 163 is corresponding with the opening of the first housing 112, and heating wire 152 is (in Fig. 3 not shown heating wire 152) between through hole 163 and the opening of the first housing 112.Heating wire 152 is arranged on this position, and the liquid after atomization can directly be taken away by air-flow, is not easy the condensed on inner walls in atomization chamber 161.
In one embodiment, the distance between heating wire 152 and the first housing 112 is greater than 2mm.First housing 112 is generally plastic material, and heat can deform.The spacing of heating wire 152 and the first housing 112 is greater than 2mm, can avoid heating wire 152 that first housing 112 is toasted softening transform.Heating wire 152 temperature is generally 230 degrees centigrade, and Setup Experiments temperature is 230 degrees Celsius, the material selection PC (Polycarbonate of the first housing 112, Merlon), specific experiment data are: softening when spacing is 1.5mm, softening during 1.6mm, softening during 1.7mm, softening during 1.8mm, softening during 1.9mm, 2.0mm can not soften, and can not soften during 2.1mm, can not soften during 2.2mm, can not soften during 2.3mm.Experiment proves that more than 2mm can avoid the first housing 112 to soften.
As shown in Fig. 2, Fig. 3 and Fig. 8, wherein in an embodiment, atomizer 100 also comprises anode connector 170, and anode connector 170 comprises anode connector body 172 and boss 174.Boss 174 is arranged at the outside of anode connector body 172, and boss 174 protrudes from anode connector body 172.Anode connector body 172 and boss 174 are conductor, and anode connector body 172 and boss 174 are electrically connected.Atomization seat 160 is positioned at the container cavity 117 of the 3rd housing 116.Part anode connector body 172 stretches in container cavity 117, and abuts with atomization seat 160, and anode connector body 172 is connected with the negative electricity of nebulising element.Anode connector body 172 offers air inlet, and air inlet is communicated with the outside of gas channel 113 and anode connector body 172.
Anode connector 170 is conductor, and the negative pole of nebulising element is electrically connected with anode connector 170, and the boss 174 on anode connector 170 for abutting with the sleeve pipe of inhalator, thus realizes nebulising element by the electrical connection of anode connector 170 with sleeve pipe.When nebulising element in atomizer 100 is aging or the interior liquid stored of atomizer 100 can be finished, user can change separately atomizer 100, and other elements of atomizing component need not be changed, for user has saved use cost, environmental friendliness, avoids unnecessary waste.When installing and change atomizer 100, atomizer 100 one end from sleeve pipe can directly be inserted by user, boss 174 can abut with the abutting part on sleeve pipe, simple, convenient, after power supply module is installed, power supply module can produce thrust to atomizer 100, thus guarantees the reliability that inhalator circuit connects.
Further, boss 174 can in the form of a ring, and boss 174 is looped around on the outside of anode connector body 172, can improve the reliability that boss 174 is connected with sleeve pipe.In one embodiment, anode connector body 172 is provided with stage portion 1722, the edge clamping of stage portion 1722 and the 3rd housing 116.
As shown in Fig. 2, Fig. 3 and Fig. 8, in one embodiment, anode connector 170 can also comprise tube connector 1724, and tube connector 1724 is positioned at air inlet place, and tube connector 1724 is connected with anode connector body 172.Tube connector 1724 is conductor, and anode connector body 172 is electrically connected with tube connector 1724, and anode connector body 172 is connected with the negative electricity of nebulising element by tube connector 1724.
As shown in Figure 2 and Figure 3, atomizer 100 also comprises positive pole connector 180 and insulation sleeve 190.Positive pole connector 180 is conductor, and positive pole connector 180 is arranged on air inlet place, and in the embodiment being provided with tube connector 1724, positive pole connector 180 is arranged in tube connector 1724 at least partly, and positive pole connector 180 is electrically connected with the positive pole of nebulising element.Insulation sleeve 190 is set on positive pole connector 180, and insulation sleeve 190 is between anode connector 170 and positive pole connector 180, and anode connector 170 is connected with positive pole connector 180 insulation.
In a concrete embodiment, simultaneously see Fig. 9, positive pole connector 180 can comprise positive pole connector body 182 and Access Division 184.In a tubular form, positive pole connector body 182 is arranged in tube connector 1724 positive pole connector body 182 at least partly.Access Division 184 is arranged on the end of positive pole connector body 182, and Access Division 184 is in the outside convex to positive pole connector body 182.Simultaneously see Figure 10, insulation sleeve 190 can comprise insulation sleeve body 192 and flange part 194.In a tubular form, insulation sleeve body 192 is between positive pole connector body 182 and tube connector 1724 for insulation sleeve body 192.Flange part 194 is arranged on the end of insulation sleeve body 192, and flange part 194 is in the outside convex to insulation sleeve body 192, and flange part 194 is between Access Division 184 and the end face of tube connector 1724.
Access Division 184 is for abutting the power supply module of inhalator.Power supply module is generally that the mode be threaded connection is connected with sleeve pipe, after power supply module screws in sleeve pipe, the interior electrode of power supply abuts Access Division 184, after power supply module screws, the interior electrode of power supply to the thrust of Access Division 184 to inside pipe casing, thus guarantees the reliability that anode connector 170 is electrically connected with sleeve pipe.Preferably, Access Division 184 offers air channel 1841 on the face abutted with power supply module, and air channel 1841 is communicated with the passage of positive pole connector body 182 inside and the outside of positive pole connector 180.Positive pole connector body 182 is tubuloses, and the passage of its inside is communicated with gas channel 113, offers air channel 1841 and gas channel 113 can be avoided to block herein, ensures that the air-flow in inhalator is unobstructed.
See Fig. 1 to Fig. 3, wherein in an embodiment, atomizer 100 can arrange fastening piece 190a outside the 3rd housing 116, and in the form of a ring, fastening piece 190a is positioned at the junction of the 3rd housing 116 and anode connector body 172 to fastening piece 190a.Anode connector body 172 part stretches into container cavity 117 and is connected with the 3rd housing 116, and fastening piece 190a lock ring, in the junction of the 3rd housing 116 and anode connector body 172, strengthens the connection of the two.Between 3rd housing 116 and anode connector body 172, all have frictional force, fastening piece 190a applies pressure, can improve the resistance of the 3rd housing 116 and anode connector body 172 relative motion, prevent the two from departing from, the 3rd housing 116 is more firm with the connection of anode connector body 172.Further, wherein in an embodiment, the position that the 3rd housing 116 contacts with fastening piece 190a, can offer the groove 1161 matched with fastening piece 190a, and fastening piece 190a can embed in this groove, can strengthen the steadiness of fastening piece 190a.
As shown in Figure 11 to 14, the inhalator 1 of an embodiment comprises atomizing component 10 and power supply module 40.Power supply module 40 is fixedly connected with atomizing component 10, and power supply module 40 is electrically connected with nebulising element.This inhalator 1 is for by the atomization of liquid, and by the fog input human body after atomization, this inhalator 1 can as electronic cigarette, also can as medical nebulizer 1 or other.
Wherein, atomizing component 10 comprises suction nozzle 200 and sleeve pipe 300, and the atomizer 100 shown in Fig. 1 to 10, and suction nozzle 200 is positioned at one end of sleeve pipe 300, and suction nozzle 200 and sleeve pipe 300 can be integrated formed structures, also can split-type structural.Atomizer 100 is positioned at the inside of sleeve pipe 300, and atomizer 100 enters the inside of sleeve pipe 300 by the other end of sleeve pipe 300.In one embodiment, sleeve pipe 300 comprises abutting part 320, and abutting part 320 is conductor, and abutting part 320 abuts with boss 174, thus realizes the electrical connection of abutting part 320 and boss 174.
Sleeve pipe 300 can comprise the first sleeve pipe 340, second sleeve pipe 360 and the 3rd sleeve pipe 380 of coaxial setting.The end of the first sleeve pipe 340 and the end abutment of the second sleeve pipe 360, the 3rd sleeve pipe 380 is set in the outside of the first sleeve pipe 340 and the second sleeve pipe 360, is fixedly connected with by the first sleeve pipe 340 with the second sleeve pipe 360.Second sleeve pipe 360 is conductor, and abutting part 320 is positioned on the inwall of the second sleeve pipe 360, and abutting part 320 is electrically connected with the second sleeve pipe 360.Second sleeve pipe 360 is provided with internal thread, power supply module 40 is provided with external screw thread, the second sleeve pipe 360 and power supply module 40 are threaded.In other embodiments, the internal thread that also can arrange on the second sleeve pipe 360, power supply module 40 arranges external screw thread.
Simultaneously see Figure 15, further, the outer wall of the second sleeve pipe 360 offers the first pore 363, first pore 363 offered inside and outside connection second sleeve pipe 360 on annular groove 361, second sleeve pipe 360 and be positioned at the bottom of groove 361.The position 3rd sleeve pipe 380 offering the second pore 381, second pore 381 inside and outside connection the 3rd sleeve pipe 380 is corresponding with groove 361.Arrange groove 361, first pore 363 and the second pore 381 can ensure air inlet on anode connector body 172 can with the ft connection of inhalator 1.Preferably, the second pore 381 and the first pore 363 are staggeredly located, and the first pore 363 and the second pore 381 are staggeredly located and can avoid entering foreign matter in inhalator 1.
Wherein in an embodiment, power supply module 40 comprises main part 420, power switch 440, first connecting portion 460 and the second connecting portion 480.Main part 420 comprises battery 422, and the second connecting portion 480 is connected with main part 420, and is connected with the negative electricity of battery 422.Second connecting portion 480 is provided with external screw thread, and the internal thread of the external screw thread of the second connecting portion 480 and the second sleeve pipe 360 of atomizing component 10 is suitable, and the second connecting portion 480 and the second sleeve pipe 360 are threaded connection.Power supply module 40 and atomizing component 10 can be assembled easily or dismantle, user is when power supply module 40 electric power is not enough, power supply module 40 can be pulled down change or charge, in atomizing component 10 during fluid low, the atomizer 100 in atomizing component 10 can be changed timely and conveniently.
First connecting portion 460 can be positioned at the middle part of the second connecting portion 480, and the first connecting portion 460 is electrically connected with the positive pole of battery 422.Be provided with insulator spacer between first connecting portion 460 and the second connecting portion 480 or separation layer be set or be not in contact with each other mutually.After second connecting portion 480 and the second sleeve pipe 360 are threaded connection, first connecting portion 460 abuts with the Access Division 184 of the positive pole connector 180 of atomizing component 10 and is electrically connected, first connecting portion 460 is larger with the contact area of Access Division 184, improves the reliability of positive pole electrical connection.Meanwhile, the first connecting portion 460 gives Access Division 184 to the thrust of sleeve pipe 300 inside, can also guarantee the reliability that anode connector 170 is electrically connected with sleeve pipe 300, thus ensures the reliability that negative electricity connects.Power switch 440 arranges on main part 420, by the conducting of ON-OFF control circuit, easy to use, and user can powered-down at any time, saves electricity.
Above-mentioned inhalator 1, the liquid in its liquid storage cylinder 115 is contacted with reserve liquid layer 130 by the delivery hole 122 on pad 120, thus is absorbed by reserve liquid layer 130, and the liquid in reserve liquid layer 130 drawn by drain rope 140, and nebulising element is again by the atomization of liquid in drain rope 140.The liquid percent of pass of pad 120 is high, and the liquid percent of pass of pad 120 can carry out rough control by the setting in the number of delivery hole 122 and aperture.The percent of pass of reserve liquid layer 130 is low, and reserve liquid layer 130 can control the throughput of liquid further accurately.Pad 120 and reserve liquid layer 130 acting in conjunction, effectively raise the control accuracy to the amount of liquid in drain rope 140.Pad 120 and reserve liquid layer 130 are all set on the first housing 112, the assembling of pad 120 and reserve liquid layer 130 all with the first housing 112 for benchmark, easy to assembly.Pad 120 is laminated structure, with low cost, reduces production cost.
Above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.